When answering the questions below: show all work and round to the proper number of significant figures. 1. Convert 0.323 moles of Cu to atoms of Cu

2. How many moles contain 2.89x1027 formula units of calcium carbonate?

3. How many atoms are contained in 150 g of argon?

4. How many formula units are present in 450.0 grams of lead (II) chloride?

5. What mass of iron (III) chloride contains 2.35x1023 chloride ions?

The answer is nitrogen-containing bases

Answerd. may include all of these are many definitions of bases: the  brønsted-lowry definition of acids and bases says that bases are proton acceptors.the arrhenius definition of acids and bases says that bases increase [oh⁻] in solution (thereby producing oh⁻ ions)the lewis definition of acids and bases says that bases donate electron pairs.therefore, the sensible answer is that a base may include all of the described characteristics.

Ithink the answer is d.